Physics – Quantum Physics
Scientific paper
2010-02-17
Proc. SPIE, Vol. 7681, 76810Z (2010)
Physics
Quantum Physics
8 pages, 7 figures, submitted to Proceedings of SPIE
Scientific paper
10.1117/12.862118
We implement an InGaAs/InP single-photon avalanche diode (SPAD) for single-photon detection with the fastest gating frequency reported so far, of 2.23 GHz, which approaches the limit given by the bandwidth of the SPAD - 2.5 GHz. We propose a useful way to characterize the afterpulsing distribution for rapid gating that allows for easy comparison with conventional gating regimes. We compare the performance of this rapid gating scheme with free-running detector and superconducting single-photon detector (SSPD) for the coherent one-way quantum key distribution (QKD) protocol. The rapid gating system is well suited for both high-rate and long-distance QKD applications, in which Mbps key rates can be achieved for distances less than 40 km with 50 ns deadtime and the maximum distance is limited to ~190km with 5 $\mu$s deadtime. These results illustrate that the afterpulsing is no longer a limiting factor for QKD.
Barreiro Claudio
Eraerds Patrick
Thew Rob
Walenta Nino
Zbinden Hugo
No associations
LandOfFree
2.23 GHz gating InGaAs/InP single-photon avalanche diode for quantum key distribution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with 2.23 GHz gating InGaAs/InP single-photon avalanche diode for quantum key distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 2.23 GHz gating InGaAs/InP single-photon avalanche diode for quantum key distribution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-51842